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How to configure a read-only copy of a remote Git repository on a local server & automatically synchronize its contents?

+1 vote
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How to configure a read-only copy of a remote Git repository on a local server in bare mode and automatically synchronize its contents.

I need to configure a mirror of the repository hosted at another location and the mirrored repository should automatically perform syncing of code at regular intervals.

posted Mar 21, 2016 by anonymous

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1 Answer

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A mirror clone is done in a very boring way -- by passing the "--mirror" command-line option to git clone.

In this mode, git clone will configure the resulting local repository in such a way that a mere call to git fetch origin will do a full one-way sync with the source remote repository.

Performing synchronization at regular interval is done via scripting the git fetch origin call making your OS's scheduler run this script using whatever schedule you will configure.

Making the repository read-only is the only tricky part in fact. This mostly amounts to the fact Git itself does not provide any
authentication and authorization, and -- by extension -- access control. To add to the picture, Git repositories may be served using a multitude of options (HTTP, SSH, Git's own server).

The native Git wire protocol (git://) served by the git-daemon program is already read-only unless you tweak the repository's
configuration (see that program's manual page for exact detais), so if you intend to serve your repository using git-daemon, that's all you will need to set up.

Otherwise I'd probably recommend to install a simple pre-receive hook into your repository which would output "Write access denied" to its standard error stream and exit with a non-zero exit code. That is, something as simple as

 #!/bin/sh
 printf 'Write access deniedn' >&2
 exit 1

This will reject all pushes from remote repositories right away. Consult the githooks manual page for more info on hooks.

answer Mar 21, 2016 by Alok Sharma
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I have a given server repository at location, let say "A" (URL) I have a new empty repository at another location, let say "B" (URL)

I WOULD LIKE TO COPY ALL CONTENT FROM A TO B.

  • In a local clone of B I did a "git pull A" but I've got the "master" branch only.
  • In a local clone of B I cannot say "git pull --all A"

COULD YOU PLEASE PROVIDE THE SINGLE STEPS ON HOW TO DO THIS?

  • please: not rsync like stuff, I would prefer the git way -> I hope there's one
  • please: a few comments would be great
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